Death records Belgium

Death records Belgium

Seeking information on Samuel Francis FORWARD - who died - possibly murdered - 3rd October 1928 in Annevoie Rouillon, Namur,Belgium. A British subject who lived in Forest Gate Essex - which is on the outskirts of London. He was married to Ethel FORWARD and had 2 children - Dorothy and George. He was a china salesman for the English firm of Gibsons.

Can anyone tell me where his death certificate is likely to be filed? Thank you.